VULNERABILITY INTELLIGENCE
CVE-2025-9901
CVSS score5.9 MEDIUM
EPSS probability0.45%
CISA KEVNot currently listed
Published2025-09-03
Last modified2026-10-18
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
A flaw was found in libsoup’s caching mechanism, SoupCache, where the HTTP Vary header is ignored when evaluating cached responses. This header ensures that responses vary appropriately based on request headers such as language or authentication. Without this check, cached content can be incorrectly reused across different requests, potentially exposing sensitive user information. While the issue is unlikely to affect everyday desktop use, it could result in confidentiality breaches in proxy or multi-user environments.
Weakness classification
- secalert@redhat.com: CWE-524